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        "%matplotlib inline"
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        "\n# Plot randomly generated multilabel dataset\n\n\nThis illustrates the `datasets.make_multilabel_classification` dataset\ngenerator. Each sample consists of counts of two features (up to 50 in\ntotal), which are differently distributed in each of two classes.\n\nPoints are labeled as follows, where Y means the class is present:\n\n    =====  =====  =====  ======\n      1      2      3    Color\n    =====  =====  =====  ======\n      Y      N      N    Red\n      N      Y      N    Blue\n      N      N      Y    Yellow\n      Y      Y      N    Purple\n      Y      N      Y    Orange\n      Y      Y      N    Green\n      Y      Y      Y    Brown\n    =====  =====  =====  ======\n\nA star marks the expected sample for each class; its size reflects the\nprobability of selecting that class label.\n\nThe left and right examples highlight the ``n_labels`` parameter:\nmore of the samples in the right plot have 2 or 3 labels.\n\nNote that this two-dimensional example is very degenerate:\ngenerally the number of features would be much greater than the\n\"document length\", while here we have much larger documents than vocabulary.\nSimilarly, with ``n_classes > n_features``, it is much less likely that a\nfeature distinguishes a particular class.\n\n"
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    {
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      "source": [
        "from __future__ import print_function\nimport numpy as np\nimport matplotlib.pyplot as plt\n\nfrom sklearn.datasets import make_multilabel_classification as make_ml_clf\n\nprint(__doc__)\n\nCOLORS = np.array(['!',\n                   '#FF3333',  # red\n                   '#0198E1',  # blue\n                   '#BF5FFF',  # purple\n                   '#FCD116',  # yellow\n                   '#FF7216',  # orange\n                   '#4DBD33',  # green\n                   '#87421F'   # brown\n                   ])\n\n# Use same random seed for multiple calls to make_multilabel_classification to\n# ensure same distributions\nRANDOM_SEED = np.random.randint(2 ** 10)\n\n\ndef plot_2d(ax, n_labels=1, n_classes=3, length=50):\n    X, Y, p_c, p_w_c = make_ml_clf(n_samples=150, n_features=2,\n                                   n_classes=n_classes, n_labels=n_labels,\n                                   length=length, allow_unlabeled=False,\n                                   return_distributions=True,\n                                   random_state=RANDOM_SEED)\n\n    ax.scatter(X[:, 0], X[:, 1], color=COLORS.take((Y * [1, 2, 4]\n                                                    ).sum(axis=1)),\n               marker='.')\n    ax.scatter(p_w_c[0] * length, p_w_c[1] * length,\n               marker='*', linewidth=.5, edgecolor='black',\n               s=20 + 1500 * p_c ** 2,\n               color=COLORS.take([1, 2, 4]))\n    ax.set_xlabel('Feature 0 count')\n    return p_c, p_w_c\n\n\n_, (ax1, ax2) = plt.subplots(1, 2, sharex='row', sharey='row', figsize=(8, 4))\nplt.subplots_adjust(bottom=.15)\n\np_c, p_w_c = plot_2d(ax1, n_labels=1)\nax1.set_title('n_labels=1, length=50')\nax1.set_ylabel('Feature 1 count')\n\nplot_2d(ax2, n_labels=3)\nax2.set_title('n_labels=3, length=50')\nax2.set_xlim(left=0, auto=True)\nax2.set_ylim(bottom=0, auto=True)\n\nplt.show()\n\nprint('The data was generated from (random_state=%d):' % RANDOM_SEED)\nprint('Class', 'P(C)', 'P(w0|C)', 'P(w1|C)', sep='\\t')\nfor k, p, p_w in zip(['red', 'blue', 'yellow'], p_c, p_w_c.T):\n    print('%s\\t%0.2f\\t%0.2f\\t%0.2f' % (k, p, p_w[0], p_w[1]))"
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